Video to APNG

[Jay123210599]

How do I convert videos to apng (Animated Portable Network Graphics) files? I tried using ffmpeg and Shutter Encoder, but I couldn't open them normally and when I did, there weren't any animation.

[pandy]

I was able to find quickly many examples how to use ffmpeg to create apng - as you not providing more details about your tries then i strongly recommend to try something from bellow links:

https://stackoverflow.com/questions/43795518/using-ffmpeg-to-create-looping-apng
https://video.stackexchange.com/questions/32865/how-to-convert-a-black-and-white-video...g-a-color-as-t
https://www.reddit.com/r/steamgrid/comments/detym1/guide_for_creating_your_own_apng/

[Jay123210599]

I was able to find quickly many examples how to use ffmpeg to create apng - as you not providing more details about your tries then i strongly recommend to try something from bellow links:

https://stackoverflow.com/questions/43795518/using-ffmpeg-to-create-looping-apng
https://video.stackexchange.com/questions/32865/how-to-convert-a-black-and-white-video...g-a-color-as-t
https://www.reddit.com/r/steamgrid/comments/detym1/guide_for_creating_your_own_apng/

Oh yeah, my previous attempted were successful, but I couldn't open them with XnViewMP (which was supposed to support them) and I went opened them using GIMP, there weren't no animation. I also set the frame rate in Shutter Encoder, by the way.

[Jay123210599]

Sorry, none of the solutions you gave me fixed the problem.

[Swedaniel]

Maybe this MPEG Streamclip can be of any use? It have some PNG choices such as Apple PNG, Apple Animation and some other similar ones... it does not look like the specific APNG is there though!

Edit: I think ive seen some sort of a-png thing somewhere before, ill try find it and re-post it here what is was, if i can find it again!

For XnView there is alot of Addons/Plugins avalible, maybe there is one that can be installed with XnView MP to help load the previously created A-PNG's? There is some addons/plugins to help create/produce things allso, maybe can get something going from there allso!

[pandy]

Oh yeah, my previous attempted were successful, but I couldn't open them with XnViewMP (which was supposed to support them) and I went opened them using GIMP, there weren't no animation. I also set the frame rate in Shutter Encoder, by the way.

Works for me - tested:

@set filename=%1

@ffmpeg.exe -y -hide_banner -v 32 -stats -i "%filename%" -an -sn -dn -vf "zscale=f=spline36:r=full:w=64:h=-2" -r 15 -fps_mode auto -plays 0 -q:v 100 -f apng "%~n1_apng.png"

[Jay123210599]

Oh yeah, my previous attempted were successful, but I couldn't open them with XnViewMP (which was supposed to support them) and I went opened them using GIMP, there weren't no animation. I also set the frame rate in Shutter Encoder, by the way.

Works for me - tested:

@set filename=%1

@ffmpeg.exe -y -hide_banner -v 32 -stats -i "%filename%" -an -sn -dn -vf "zscale=f=spline36:r=full:w=64:h=-2" -r 15 -fps_mode auto -plays 0 -q:v 100 -f apng "%~n1_apng.png"

I got this in XnViewMP when I used the code.

[Attachment 75748 - Click to enlarge]

[poisondeathray]

For ffmpeg : use the ".apng" extension in the commandline , but rename it to ".png" after

[Jay123210599]

For ffmpeg : use the ".apng" extension in the commandline , but rename it to ".png" after

Still didn't work.

[poisondeathray]

For ffmpeg : use the ".apng" extension in the commandline , but rename it to ".png" after

Still didn't work.

Post your command line

Works for me

Plays in browsers, XnViewMP

[Jay123210599]

For ffmpeg : use the ".apng" extension in the commandline , but rename it to ".png" after

Still didn't work.

Post your command line

Works for me

Plays in browsers, XnViewMP

command line: ffmpeg -i input.mkv output.apng

[poisondeathray]

command line: ffmpeg -i input.mkv output.apng

ffmpeg -i input.mkv -plays 0 -c:v apng output.apng

Rename "output.apng" to "output.png"

[Jay123210599]

command line: ffmpeg -i input.mkv output.apng

ffmpeg -i input.mkv -plays 0 -c:v apng output.apng

Rename "output.apng" to "output.png"

Sorry, but no. Here's the video and its information if it helps.

[Jay123210599]

Video here:

[poisondeathray]

Because it's 10bit444 source, ffmpeg will auto convert to 16bit RGB by default, instead of 8bit RGB. But 16bit RGB apng will not be compatible with most browsers or applications

Use -vf format=gbrp to convert it to 8bit planar RGB. In this example, I also downscaled it to 640x360

ffmpeg -i ggg.mkv -vf format=gbrp,scale=640:360 -plays 0 -c:v apng output.apng

Rename output.apng to output.png

[Jay123210599]

Because it's 10bit444 source, ffmpeg will auto convert to 16bit RGB by default, instead of 8bit RGB. But 16bit RGB apng will not be compatible with most browsers or applications

Use -vf format=gbrp to convert it to 8bit planar RGB. In this example, I also downscaled it to 640x360

ffmpeg -i ggg.mkv -vf format=gbrp,scale=640:360 -plays 0 -c:v apng output.apng

Rename output.apng to output.png

Why does it convert to 16 RGB? Why isn't apngs like that compatible?

[poisondeathray]

Why does it convert to 16 RGB? Why isn't apngs like that compatible?

ffmpeg auto converts to 16bit RGB from 10bit YUV source because that's the way it's coded right now. Maybe behaviour will change sometime, ffmpeg is a fluid, always changing project

16bit RGB filesizes are massive and incompatible for most display scenarios . Browsers are meant to be light weight, fast transfers . If you have to wait an hour before the apng even loads, it's pretty silly . Some people in rural areas, some countries have very slow internet

Ask the developers/programmers for your various software why it's not compatible , maybe they have other reasons

[Jay123210599]

Why does it convert to 16 RGB? Why isn't apngs like that compatible?

ffmpeg auto converts to 16bit RGB from 10bit YUV source because that's the way it's coded right now. Maybe behaviour will change sometime, ffmpeg is a fluid, always changing project

16bit RGB filesizes are massive and incompatible for most display scenarios . Browsers are meant to be light weight, fast transfers . If you have to wait an hour before the apng even loads, it's pretty silly . Some people in rural areas, some countries have very slow internet

Ask the developers/programmers for your various software why it's not compatible , maybe they have other reasons

I also want the frame rate of my apng file to match the one from the output. How do I do that?

Plus, for Shutter Encoder, how do I adjust the RGB to fix it to 8 RGB?

[poisondeathray]

I also want the frame rate of my apng file to match the one from the output. How do I do that?

Framerate of output should be automatic same as input file in ffmpeg . You can force a different framerate with -r as an input option

Or for full control you can use other software such as apngasm with individual frames. You can specify different frame delay times



If the framerate doesn't look the same, it might be the program is having difficulty playing back apng with large sizes at full speed. And/Or your hardware is too slow . apng is not a playback optimized format

Plus, for Shutter Encoder, how do I adjust the RGB to fix it to 8 RGB?

Not sure, I don't use it





If I didn't downscale, just keep 8bit RGB the apng is massive - 12.7MB source video balloons to 474MB (!)

Even with downscaling it's still 59.3MB .

No downscaling plus 16bit RGB ballons to 1.15GB(!!)

apng's are meant to be used in very specific display scenarios, not general use